F04F 5/52
Of evacuating pumps
Official title: of evacuating pumps
F04F5/52 (Of evacuating pumps) appears on 118 US grants and 112 published applications in this corpus.
Search patents in F04F- Granted patents
- 118
- Published applications
- 112
- Assignees
- 69
- Inventors
- 206
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 5 | 3 |
| 2003 | 1 | 6 |
| 2004 | 7 | 5 |
| 2005 | 2 | 2 |
| 2006 | 1 | 3 |
| 2007 | 0 | 2 |
| 2008 | 2 | 3 |
| 2009 | 1 | 3 |
| 2010 | 3 | 7 |
| 2011 | 3 | 2 |
| 2012 | 3 | 2 |
| 2013 | 1 | 4 |
| 2014 | 3 | 3 |
| 2015 | 3 | 10 |
| 2016 | 3 | 6 |
| 2017 | 8 | 9 |
| 2018 | 5 | 4 |
| 2019 | 9 | 5 |
| 2020 | 5 | 7 |
| 2021 | 4 | 3 |
| 2022 | 6 | 11 |
| 2023 | 8 | 4 |
| 2024 | 4 | 2 |
| 2025 | 3 | 2 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Two-stage jet device with flow guide structure15 Sep 2026US 12,736,066 B2Jiangsu University
- Jet pump system9 Jun 2026US 12,650,134 B2Honeywell International Inc.
- Methods and apparatus to remove liquid from a housing10 Mar 2026US 12,571,411 B2General Electric Company
- Vacuum unit4 Nov 2025US 12,459,083 B2Festo AG & Co.
- Ejector and vacuum generating device including the same7 Oct 2025US 12,435,737 B2SMC Corporation
- Two-stage jet device with flow guide structure2 Jul 2026US 2026/0185543 A1Jiangsu University
- Methods and apparatus to remove liquid from a housing25 Jun 2026US 2026/0177080 A1General Electric Company
- Ejector-type vacuum pump assembly having stabilised membrane flow valve, and a flow control unit having stabilised membrane flow valve for use with an ejector-type vacuum pump of such assembly, and a method of con-trolling a vacuum level in a vacuum chamber of an ejector-type vacuum pump of the assembly9 Apr 2026US 2026/0098529 A1
- Ejector-type vacuum pump assembly having stabilised membrane flow valve, and a method of controlling a vacuum level in a vacuum chamber of an ejector-type vacuum pump of the assembly9 Apr 2026US 2026/0098530 A1
- Jet pump system28 Aug 2025US 2025/0271004 A1Honeywell International Inc.
Most cited
By later US patents
- Vacuum-generating unit93US 6,416,295 B1SMC Corporation · 2002
- System for handling workpieces and method for operating such a system54US 9,656,813 B2J. Schmalz GmbH · 2017
- Vacuum producing device52US 7,140,389 B2Festo AG & Co. · 2006
- Checkvalve unit41US 6,035,881 AWalter Alfmeier GmbH + Co. Prazisions-Baugruppenelemente · 2000
- Method of and system for electrically processing vacuum pressure information suitable for use in vacuum unit34US 5,617,338 ASMC Corporation · 1997